/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.extensions.euphoria.core.client.util;



import com.bff.gaia.unified.sdk.extensions.euphoria.core.annotation.audience.Audience;

import com.bff.gaia.unified.sdk.extensions.euphoria.core.client.functional.CombinableReduceFunction;



import java.util.stream.Collectors;



/** Provides commonly used function objects around computing sums. */

@Audience(Audience.Type.CLIENT)

public class Sums {



  private static final CombinableReduceFunction<Long> SUMS_OF_LONG =

      (CombinableReduceFunction<Long>) s -> s.collect(Collectors.summingLong(e -> e));

  private static final CombinableReduceFunction<Integer> SUMS_OF_INT =

      (CombinableReduceFunction<Integer>) s -> s.collect(Collectors.summingInt(e -> e));



  private Sums() {}



  public static CombinableReduceFunction<Long> ofLongs() {

    return SUMS_OF_LONG;

  }



  public static CombinableReduceFunction<Integer> ofInts() {

    return SUMS_OF_INT;

  }

}